Analysis of information sources in references of the Wikipedia article "Κατάλογος γλωσσών ανά αριθμό μητρικών ομιλητών στην Ινδία" in Greek language version.
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, Issue 10, 2003, pp. 8–10, (Feature: Languages of West Bengal in Census and Surveys, Bilingualism and Trilingualism) and Tropf, Herbert S. 2004.
India and its Languages Αρχειοθετήθηκε 2008-03-08 στο Wayback Machine.. Siemens AG, Munich.)|url=
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, Issue 10, 2003, pp. 8–10, (Feature: Languages of West Bengal in Census and Surveys, Bilingualism and Trilingualism) and Tropf, Herbert S. 2004.
India and its Languages Αρχειοθετήθηκε 2008-03-08 στο Wayback Machine.. Siemens AG, Munich.)|url=
. Empty.
, Issue 10, 2003, pp. 8–10, (Feature: Languages of West Bengal in Census and Surveys, Bilingualism and Trilingualism) and Tropf, Herbert S. 2004.
India and its Languages Αρχειοθετήθηκε 2008-03-08 στο Wayback Machine.. Siemens AG, Munich.)